Process for improving water for brewing and malting purposes.



UNITED STATES Parnnrormcn EDUARD .JALOWETZ, Emir, maxim ze, Arnnnrscatterers, or gamma, AUSTRIA- Hameanx.

PRQGESS FOR IMPROVING WATER FOR BEEWING. AND ivrai rmerunrosns.

Nomawing.

Tonll who-m it may concern:

Be it known that we, Professor Elm-Am) Janown'rz, EMU, V Rrcrrrnm and ALBERT Scnt cxnsr, subjects of the Austroel'lungm rian Emperor, residing a;t;Vienna,Austria.- Hungary, have invei-ited certain new and useful Improvements in Processes for Improving lrVater for, Brewing and Malting Purposes, of which the following: is a speci-. fication.

,The carbonate of lime and carbonate of magnesia. contained in the brewing water exercise. injurious effects in various respects In order to avoid fthegdrsadvantages of can: bonate of, lime and carbonate of magnesia. 1n

brew-ingxwater it has heretofore been the practice to reduce as far as possible the proportion of carbonates, both in" the mashing water and also, in the spargmgwater, by

boiling or at least heating the water and allowingthe salts precipitatedtosettle. By treating the water in thismannen the car-.

bonate of lime'only is separated iir considbonate of, magnesia, it is necessary to" mix the water beforeboiling with: a correspondingquantity of chlorid of calcium, whereupon carbonate of lime and chlorid of mag nesium are. produced by adouble: reaction.

According to another prooess the-so-called' Burtonlzmg which consists 1n the addition of gypsum to the mash, carbonate magnesia is converted into sulfate of'magnesium, a compound which also has ery unfavorable special qualities.

Theimprovement of th water forlrthe;

purpose of brewing by thoroughly separating therefrom the carbonates of alkaline earths, can be effected according to this invention in a much simpler manner and without the use of chemical agents, by simply heating the water under pressure and simultaneously yigorouslyj-agitating it and then separating the precipitatestherefrom by filtration or decantation. By this treatment-.iboth the carbonate of-calcium and the carbonate of magnesium contalned 1n-*the- Water are precipitated in very considerable quantities after abrief. treatment. At the same time the proportion of salts which are beneficial in the brewing water, such as calcium chlorid and sulfates of alkalies, are left completely without modification or al- Inord'er to remoye and 1 render harmless the more ObJQGtl'OIllblG car- Speeificafien 6f tfi 3atnt Patented Feb. 2 2, 1916. Application filed January-18, 1912. Serial No. 671,925.

most completely as for instance is the case with reference to sulfatesof alkaline earths. I n carrying out the process the water is heated and simultaneously given an eddy motion in a closed and incompletely filled tank. The wateris vigorously agitated While being boiled, either by means of the heating-steam; or by means of (mechanical stirring: devices. The advantage of this method overth-e method ofsimple heating under pressure is, that the precipitation of thesa-lts is independent of the degree of concentration. Ill Iore'over, the heat energy lemme-completely utilized and owing to the vi 'gorouslnotion of the "liquid the Water is more thoroughly freed from carbonates.

\"Veare aware of the process described in United States Patent No.-f925,283, Which is directed to a method for preventingthe formation of" scale on the walls of steairr boilers; In that method, feed water for boilers: isl-boiled inclosed and incompletely filledztanks -with simultaneous rigorous agi Y tation in. order to precipitate'a portion of the scale forming: substances in: the form of a fine powder floating in the water. The

said feed:- Water together with the floating powder, thereinis then: introduced into'the such; treatment from the Water is introduced alongwith thewater to preven t'theadhesion of the scale forming substances on the walls ofthe' {boiler-. The scale forming substances crystallize: outrof the water-during the concentratrion of-the: Water in the boiler and chiefly lconsist'of sulfates. It has been attempted" to explain theoperation of that process by assuming that the suspended particles: in\ the boiler feed water serve by their-friction onthe.Walls'ofthe-boiler to'f' prevent the adhesionvon' said xwalls of the precipitates formediirr the boiler itself. It;- may be. that the small crystals finely dis tributed in the boiler water, actto a certain lized out in theboiler, so that a solid deposit cannot be formed on the boiler walls.

extent, as centers of crystallization which f :attract the scale forming substances crystaltalline nature of the precipitate has no im-' portance whatever. For the purpose of the subsequent separation it would even have been preferable to obtain a coarser precipitate.

The important point of our process, namely the extensive precipitation of carbonates, more particularly of "carbonates of magnesium, is not in any way disclosed by such a process for-preventing the formation of boiler scale. In our process the precipitation of the carbonates is practically com plete and requires but a very short time.

According to our process the precipitate produced by the boiling. of the water during vigorous agitation, must be completely removed in order to makethe product suitable for brewing purposes, and for use as mashis probably due to the'fact that the carbonate of magnesium being partly precipitated in the form of oxyhydrate of magnesium is again dissolved when left standing, owing to the exceedingly fine form of the precipitate. 'Unless the precipitate'is immediately removed therefore an important advantageof our process is lost-,because the salts of magnesium will otherwise return into solution. V

By a vprocessaccording to this invention. water containing a very large proportion of carbon ates can be deprived of these injurious ingredients and more particularly of carbonates of magnesium, the water being freed to such an extent as to convert it into an excellent brewing water. This is an exceedingly importantadvantage on account of of light beer of the Pilsentype can be made v suitable by our process from water otherwise unsuitable for that purpose. The practicalresults of the process are surprisingly favor able.-

l/Ve claim:

1. The process of purifying water which comprises heating the water and simultaneously vigorously agitating all the particles thereof to cause aprecipitation of carbonates throughout all particles of said water and removing the precipitate from said water.

2. The process of purifying water which comprises heating the water and simultaneously vigorously agitating all the particles thereof to cause a precipitationof carbonates throughout all particles of said water and immediately removingthe precipitate from said water.

3. The process of purifying water which comprises heating the water above the boil.- ing point in a closed vessel and simultaneously vigorously agitating all. the particles thereof to cause a precipitation of carbonates throughout all particles of said water and removing the precipitate from said water.

4. The process of purifying water which comprises heating the water above the boiling point in a closedvessel, and simultaneously vigorously agitating all the particles thereof-to cause a precipitation of carbonates throughout all particles of said water PROF. EDUARD aarlown'rz. Inc. EMIL RICHTER; ALBERT scnn cxnnn.

Witnesses Dr. 'RIGHA'RD. Rlnrrz, i-AUcUsr' FUGGER.

I Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents r I Washington, D. 0. 

